26551564201 has 16 divisors (see below), whose sum is σ = 27834347520. Its totient is φ = 25295901840.

The previous prime is 26551564199. The next prime is 26551564217. The reversal of 26551564201 is 10246515562.

It is a cyclic number.

It is not a de Polignac number, because 26551564201 - 2¹ = 26551564199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26551664201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4705740 + ... + 4711378.

It is an arithmetic number, because the mean of its divisors is an integer number (1739646720).

Almost surely, 2^26551564201 is an apocalyptic number.

It is an amenable number.

26551564201 is a deficient number, since it is larger than the sum of its proper divisors (1282783319).

26551564201 is a wasteful number, since it uses less digits than its factorization.

26551564201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8004.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 26551564201 in words is "twenty-six billion, five hundred fifty-one million, five hundred sixty-four thousand, two hundred one".